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AURORKA [14]
3 years ago
15

HELP ME PLeaseee!!!!

Mathematics
2 answers:
Softa [21]3 years ago
6 0

Answer:

x= 8.5, 2x=17, (9x+5)=81.5

Step-by-step explanation:

since the sum of the interior angles of a triangle is 180 degrees, you must add all of the angles and set them equal 180:

2x + 2(9x+5) = 180

next distribute the 2 to 9x + 5.

2x + 18x + 10 = 180

next combine like terms (2x and 18x) and subtract 10 from 180.

20x = 170

finally, divide 170 by twenty.

\frac{20x = 170}{20}\\,x=8.5

the final answer is x=8.5

once x is determined, you can solve 2x and 9x+5.

2(8.5)=17\\\\9(8.5) +5 =81.5

Romashka-Z-Leto [24]3 years ago
3 0
6th of the term of 4th
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Step-by-step explanation:

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2 years ago
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Step-by-step explanation:

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2 years ago
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kumpel [21]

Answer:

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Step-by-step explanation:

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4 0
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alexandr1967 [171]

Answer:

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Step-by-step explanation:

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